/Engine/Source/Runtime/Core/Public/Templates/SharedPointer.h
Assignment operator replaces this shared reference with the specified shared reference. The object currently referenced by this shared reference will no longer be referenced and will be deleted if there are no other referencers. Must not be nullptr.
template<typename OtherType, typename DeleterType, typename> [TSharedRef](API\Runtime\Core\Templates\TSharedRef) & operator= ( [SharedPointerInternals::TRawPtrProxyWithDeleter](API\Runtime\Core\Templates\TRawPtrProxyWithDeleter)< OtherType, DeleterType > && InRawPtrProxy )